Addison Russell, the top prospect in the A's minor league system, will be out for at least a month after tearing his right hamstring while playing for Oakland's Double-A minor league team in Midland, Texas.
A's assistant general manager David Forst confirmed in a text that Russell will be sidelined until May.
Russell originally injured his hamstring during Cactus League play. He took some time off to heal, then reported to Midland. He reinjured his hamstring Friday in a game against Arkansas. He homered and singled earlier in the game.
The 20-year-old Russell is reported to have a Grade 3 tear, which is a complete tear of the muscle, and a one-month recovery time may be optimistic.
The A's first-round pick (11th overall) in 2012, Russell is regarded as one of the dozen or so best players in the minor leagues